Hitting Mesa 23.2-devel yesterday following that earlier article about a Valve optimization for an upcoming Steam game, another patch landed. With radv: track DB_COUNT_CONTROL changes to avoid context rolls , longtime RADV developer Samuel Pitoiset at Valve noted:
"This can be really noticeable for the BeginQuery/Draw/EndQuery pattern. It seems to improve a depth-only pass by +35% in one upcoming game because this removes a bunch of context rolls."
Given the timing, presumably this "upcoming game" that Valve is optimizing for is the same as the prior commit on Thursday. Samuel added in the MR , " Hans-Kristian confirmed that this specific pass no longer have any context rolls. We did compare against native. " With Hans-Kristian Arntzen being the lead VKD3D-Proton developer.
These optimizations will be found in Mesa 23.2 that will be out as stable around August.
Great seeing this optimization work by Valve for ensuring a great launch-day Linux gaming experience for whatever this title ends up being and even if it's within Steam Play for enjoying Windows games on Linux.